where are the lines of responsibility when it comes to cyber defense? where do we draw those lines? how do those responsibilities get executed? as part of that effort, the department is now finalizing the most comprehensive change to our rules of engagement in cyberspace in seven years. the new rules will make clear that the department has a responsibility not only to be thin d.o.d.'s networks -- to networks, but to defend the nation and our natural -- national interests in cyberspace. these new rules makes the department more agile and provides us with the ability to confront major threats quickly. to execute these responsibilities, we must have strong organizational structures in place. three years ago, the department took a major step forward by establishing the united states cyber command. under the leadership of a four start officer who also served as the director of the national security agency, cyber command has matured into what i believe it is a world-class organization. it has the capacity to conduct a full range of missions in cyberspace. it